[master] Update dependencies from dotnet/sdk

[dotnet-maestro]

This pull request updates the following dependencies

From https://github.com/dotnet/sdk

• Subscription: 6f9c7b2d-c29c-4b2f-fcec-08d7d0f045ee
• Build: 20200506.1
• Date Produced: 5/6/2020 8:42 AM
• Commit: d4ff458
• Branch: refs/heads/master
• Updates:
  • Microsoft.DotNet.MSBuildSdkResolver: from 5.0.100-preview.5.20255.7 to 5.0.100-preview.5.20256.1
  • Microsoft.NET.Sdk: from 5.0.100-preview.5.20255.7 to 5.0.100-preview.5.20256.1

[dotnet-maestro]

Auto-Merge Status

This pull request has been merged because the following merge policies have succeeded.

• ✔️ Standard Merge Policies Succeeded - Successful checks: installer, installer (build Linux Build_LinuxPortable_Release_x64), installer (build Darwin Build_Release), installer (build Linux Build_Linux_musl_Debug_x64), installer (build Linux Build_Arm64_Debug), installer (build Linux Build_Arm_Debug), installer (build Windows_NT Build_Release_arm64), installer (build Linux Build_Rhel_7_2_Release_x64), installer (build Linux Build_Debian_Stretch_Debug_x64), installer (build Windows_NT Build_Release_arm), installer (build Linux Build_CentOS_7_1_Debug_x64), installer (build Windows_NT Build_Release_x64), installer (build Linux Build_Fedora_29_Debug_x64), installer (build Windows_NT Build_ES_Debug_x64), installer (build Linux Build_Ubuntu_18_04_Debug_x64), installer (build Linux Build_Ubuntu_16_04_Debug_x64), installer (build Windows_NT Build_Debug_x86)
• ✔️ Standard Merge Policies Succeeded - No reviews have requested changes.
• ✔️ Standard Merge Policies Succeeded - No version downgrade detected.